<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<style>
		table{
			width: 90%;
			margin: 0 auto;
			border-collapse: collapse;
			text-align: center
		}
		td{
			height: 50px;
		}
		table,td,tr{
			border: 1px solid #ccc;
		}
		tr:first-child{
			background: #efefef;
		}
		tr:hover{
			background: #efefef;
		}
	</style>
</head>
<body>
	<table>
		<tr>
			<td>Name</td>
			<td>age</td>
			<td>sex</td>
		</tr>
		<tr>
			<td>Chenjiang</td>
			<td>20</td>
			<td>male</td>
		</tr>
		<tr>
			<td>Lucy</td>
			<td>19</td>
			<td>female</td>
		</tr>
		<tr>
			<td>Jack</td>
			<td>22</td>
			<td>male</td>
		</tr>
	</table>
</body>
</html>